New object in python

Question

Hi.
Can we add new object to our python program?
E.g:

a= <'a','b','c'>
>>> type(a)
output: class UserDefined

Answer 1

Sure. Ex

https://code.sololearn.com/cuUZdc9KhHu0/?ref=app

Answer 2

what the hell are u doing there????
It seems to be a cool hack

Answer 3

There's a way creating an object on the fly, using the type function, for example like this:

myobj = type('MyType', (object,), dict(a=1, b=2, c=3))()
print(myobj)
print(myobj.a)

That what you're talking about?

Answer 4

Oh, wait, do you mean, you want to invent a new *literal* for your type?

So that, just as you can write...

l = []
d = {}
s = ''

... you could write this...

x = <1, 2, 3>

... and it would become an instance of your own type?

That would be similar to operator overload, maybe 'delimiter overload'?

Okay, I think we can't do that.

That would be quite fancy. 😁

Answer 5

Folks I like this question very much but forgot to upvote.
😉

Answer 6

In python you cannot create your own symbols like that. There is some fancy stuff like the matmul operator @ which is used (implemented) exclusively by numpy. You can override it with magic methods same as other operators. But <> cannot be used like this.

In some programming languages like Lisp or Haskell you have more freedom to define such symbols.

Answer 7

You can inherit from builtin types, would that do the trick?

class MyList(list):
...

And then define whatever you want to add or override, everything else remaining just like list.

Answer 8

thank you Sousou and HonFu .
But I knew these trick.
I just wanted to make a new type of object that can make it simple like lists with another type name.

Answer 9

Go through https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/python_classes.asp

Answer 10

But in code dont use the tags '< >'

Answer 11

You may find answer in https://www.tutorialspoint.com/How-to-append-objects-in-a-list-in-JUMP_LINK__&&__Python__&&__JUMP_LINK

Answer 12

you just create a new class
that’s what class is a blueprint for objects

https://www.programiz.com/JUMP_LINK__&&__python__&&__JUMP_LINK-programming/class

Answer 13

Yes this class is over viewing the pass lreanson

Answer 14

is it a question? please provide your tips as a block. dont post in QNA section.
Have a nice coding.

Answer 15

S bro it is easy good idea